The 255 Series from Teledyne Relays is a RF Relay with Frequency 10 MHz to 1 GHz, Coil Voltage 5.0 to 32.0 V, Voltage 1.6 to 13.0 V (Set/Reset Voltage), Resistance 45 to 1000 Ohms. Tags: 1/2 Size Crystal Can. More details for 255 Series can be seen below.